However, underneath all of those emotionally charged moments and David Madson’s inability to escape, American Crime Story still is a Ryan Murphy show, and Murphy wouldn’t be the creator he is without his fair share of jaw-dropping celebrity cameos. Consider this your guide to all the questions you may have about the fourth episode of the Versace season of American Crime Story.

Was that Aimee Mann on Versace last night?

It sure was. In an interview with Vanity Fair, executive producer Brad Simpson revealed that Mann’s inclusion was a bit of a nod to David Lynch‘s work. According to Simpson, he was talking with writer and executive producer Todd Rob Smith about how to incorporate pop music into the show. “He’d come up with this idea that [Andrew and David] would stop at a roadside bar, and there would be somebody singing — a sort of woman who had a great voice. There was a backstory to her. Maybe she thought she could make it out of this area of this town, but life didn’t work out, and she’s got this sort of weathered, great voice and is stuck there,” Simpson said about the scene.

“We talked about who we could get to play this. Somebody who was first known in the 1980s, who had a strong voice and you could buy as somebody who would live in this landscape,” he said to Vanity Fair. “When we went to Ryan [Murphy] for suggestions of who could it be, he instantly said, without a beat: ‘Aimee Mann. Send her the pages, tell her we’re gonna figure out the song, but it has to be her.'”

Ultimately, they decided that Mann should sing “Drive.” The full interview does a great job explaining exactly what this song means to the series and these characters during this emotional episode.

Who plays David Madson?

Cody Fern portrays the young architect and stands as one of the most heart-wrenching characters in the entire miniseries. The Australian actor isn’t vert well known in America yet. However, he did star in The Tribes of Palos Verdes as Jim.

How did David Madson die?

Out of the many murders Andrew Cunanan committed, David Madson‘s is the most mysterious. Madson was often referred to in tabloids and news outlets at the time as the lost love of Cunanan’s life, an angle that The Assassination of Gianni Versace portrays and expands in a beautiful way. However, when Jeff Trail‘s body was first found in David Madson’s apartment, it was originally believed that the architect was the killer. It was only because of a bag that Cunanan left behind that authorities were able to connect Trail’s murder to the serial killer.

Even then, it was originally believed that Madson helped Cunanan murder Trail. However, testimonies from Madson’s family members and friends as well as Cunanan’s later murders discredited this theory. The pair left Madson’s apartment in Minneapolis, Minnesota, but Madson’s body was found the east shore of Rush Lake near Rush City, Minnesota, roughly 60 miles away. Madson died gunshot wounds in his head and back, and his body was found on May 3, 1997 — six days after Jeff Trail’s murder. He had been murdered by the same weapon Cunanan would later use to kill William Reese, Gianni Versace, and himself.

Because Madson’s last moments were spent almost exclusively with Cunanan, almost every detail about the conversations between the two in “House by the Lake” is fictional.